Ethylene Thiourea
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Synthesis of Nano-Pore Size Ag(I)-Imprinted Polymer for the Extraction and Preconcentration of Silver Ions Followed by Its Determination with Flame Atomic Absorption Spectrometry and Spectrophotometry Using Localized Surface Plasmon Resonance Peak of Silver Nanoparticles
Silver ion imprinted polymer (IIP) was synthesized in the presence of Ag(I)-N,N’‑bis(salicylidene)ethylenediamine (salen) complex using 4-vinylpyridine as the functional monomer, ethylene glycol dimethacrylate (EGDMA) as the crosslinker, and 2,2-azobis(isobutyronitrile) (AIBN) as the initiator. The Ag(I)-imprinted polymer (IIP) particles were characteriz
J. Braz. Chem. Soc.. Publicado em: 2015-06
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2. Avaliação de resíduos de etilenotiouréia (ETU) em frutas comercializadas na cidade de São Paulo / Evaluation of ethylene thiourea (ETU) in fruits traded in the city of São Paulo.
Ethylene thiourea (ETU) is a toxic substance generated by the degradation and/or biotransformation of ethylenebisdithiocarbamates (EBDC) fungicides. Their residues may be found in plants and in the environment after EBDC s use in agriculture or in animals and humans when exposed to such products. ETU is confirmedly able to induce tumors in rodents thyroids a
Publicado em: 2007
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3. Ethylene thiourea: thyroid function in two groups of exposed workers.
Ethylene thiourea is manufactured at one factory in the United Kingdom and is mixed into masterbatch rubber at another. Clinical examinations and thyroid function tests were carried out over a period of three years on eight process workers and five mixers and on matched controls. The results show that the exposed mixers, but not exposed process workers, have
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4. EFFECT OF ETHYLENE CHLORHYDRIN AND THIOUREA ON ELODEA AND NITELLA1
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5. Effects of Germination-promoting Substances Given in Conjunction with Red Light on the Phytochrome-mediated Germination of Dormant Lettuce Seeds (Lactuca sativa L.)
Ethylene or thiourea can substitute for gibberellic acid but not for red light in breaking the secondary dormancy induced by extended dark storage of fully hydrated lettuce seeds (Lactuca sativa cv. Grand Rapids). After 10 days of storage, ethylene, thiourea, or gibberellic acid applied either separately or in any combination in conjunction with red light in
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6. Dormancy and Impotency of Cocklebur Seeds: VII. Inability of Dormant Cotyledons to Form Chlorophyll
Dormant seeds of cocklebur (Xanthium pennsylvanicum Wallr.) were characterized by the lack of ability to form chlorophyll. Such an inability of cotyledons of the dormant seeds was improved by the application of various factors and reagents which were capable of breaking the dormancy and of increasing cotyledon enlargement. Of these, ethylene, benzyladenine,
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7. Lactoferrin enhances hydroxyl radical production by human neutrophils, neutrophil particulate fractions, and an enzymatic generating system.
During phagocytosis, neutrophils take oxygen from the surrounding medium and convert it to superoxide anion (O2-) and hydrogen peroxide (H2O2). Hydroxyl radical (.OH), a particularly potent oxidant, is believed to be produced by interaction between O2- and H2O2 in the presence of iron, according to the Haber-Weiss reactions. Production of .OH by whole human
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8. Diversity in Butane Monooxygenases among Butane-Grown Bacteria
Butane monooxygenases of butane-grown Pseudomonas butanovora, Mycobacterium vaccae JOB5, and an environmental isolate, CF8, were compared at the physiological level. The presence of butane monooxygenases in these bacteria was indicated by the following results. (i) O2 was required for butane degradation. (ii) 1-Butanol was produced during butane degradation.
American Society for Microbiology.
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9. Effect of Phloretin on Water and Solute Movement in the Toad Bladder
It is generally believed that urea crosses the cell membrane through aqueous channels, and that its movement across the membrane is accelerated in the direction of net water flow (solvent drag effect). The present report presents evidence for a vasopressin-sensitive pathway for the movement of urea, other amides, and certain non-amides, which is independent